因式分6(x-y)3-4(y-x)2.
6(x-y)3-4(y-x)2
=6(x-y)3-4(x-y)2,
=2(x-y)2[3(x-y)-2],
=2(x-y)2(3x-3y-2).
—Will a pencil______ —I'm afraid not. Only a pen can be used in the exam.
A. countB. fitC. doD. satisfy
心理学